A keystone holds the arch together
We named the firm after the keystone — the single wedge-shaped stone at the top of an arch that holds every other stone in place. Take it out and the whole structure falls. That’s how we think about HR in a growing company: it’s the unglamorous piece in the middle that quietly keeps everything else standing.
Keystone HR was started to give smaller Singapore employers the kind of senior HR support that, until now, only large companies could afford. Most SMEs we meet are stuck in the same spot — handling hiring, payroll, contracts and the occasional dispute on goodwill and Google searches, knowing it isn’t quite right, but not large enough to justify a full-time HR head.
So we became that head, shared across many firms. One accountable consultant per client, backed by specialists in payroll, immigration and recruitment, covering the whole of HR under one roof. No four-vendor juggling, no copy-pasted MNC policy, no surprise invoices — just steady, practical advice that fits how a Singapore SME actually runs.
Meet our founder
Adeline Sng
Founder & Principal Consultant
Spent eighteen years leading HR for manufacturing and tech firms before starting Keystone to give smaller employers the senior HR judgement that only big companies could usually afford. Still personally takes on the trickiest advisory and compliance work.
Adeline keeps Keystone deliberately small and senior. She believes an SME deserves the same calibre of HR thinking as a multinational, scaled to fit — and that the firm earns its keep by being honest, even when honesty means telling a client they don’t need to spend more with us.
Talk to the teamThe people on your account
Small, senior and accountable — you’ll know exactly who is handling your work.
What we stand for
The principles behind every engagement.
One accountable consultant
A single senior person owns your account and learns how you work, so you never have to brief a stranger from scratch every time you call.
The whole of HR, in one place
Recruitment, advisory, payroll, compliance, passes and training under one roof — no juggling four vendors who don’t talk to each other.
Pricing you can see coming
Fixed-fee projects and clear monthly retainers, scoped and agreed before work starts. No surprise invoices, no padded hours.
Built for SMEs, not MNCs
Our advice fits a 12- or 60-person firm, not a copy-paste of a multinational’s policy that nobody on your team will ever follow.
Compliant by default
We keep your contracts, records and pass conditions aligned with the Employment Act, MOM and PDPA as the rules move — quietly, in the background.
Honest, even when it costs us
If you don’t need a retainer, we’ll tell you. We’d rather have a client for ten years than oversell one engagement.